CVE-2021-35955 — Cross-site Scripting in Contao

CWE-79 — Cross-site Scripting4 documents4 sources
Severity
4.8MEDIUMNVD
EPSS
0.3%
top 45.78%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
ContaoContao Core-bundle
Timeline
PublishedAug 12
Latest updateAug 25

Description

Contao >=4.0.0 allows backend XSS via HTML attributes to an HTML field. Fixed in 4.4.56, 4.9.18, 4.11.7.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:NExploitability: 1.7 | Impact: 2.7

Affected Packages3 packages

▶NVDcontao/contao4.0.0 — 4.4.56+2
▶Packagistcontao/contao4.0.0 — 4.4.56+2
▶Packagistcontao/core-bundle4.0.0 — 4.4.56+2

🔴Vulnerability Details

3
GHSA
Cross site scripting via HTML attributes in the back end↗2021-08-25
▶
OSV
Cross site scripting via HTML attributes in the back end↗2021-08-25
▶
CVEList
CVE-2021-35955: Contao >=4↗2021-08-12
▶
CVE-2021-35955 — Cross-site Scripting in Contao | cvebase